Angiogenic activity of hyperplastic and neoplastic lymph nodes

Angiogenic capacity was tested in 14 non-Hodgkin's lymphomas, 7 Hodgkin's lymphomas and 15 cervical lymph nodes nonneoplastic but draining a territory with a laryngeal carcinoma. The objective was to find out whether different groups of lymphomas showed differences in their angiogenic capacity and to compare the ability to induce neovascularization of neoplastic lymphocytes. Frequency and intensity of the angiogenic response were similar for classes of lymphomas different for morphologic and immunologic characteristics. The presence of a carcinoma was sufficient to induce in tributary, nonmetastatic lymph nodes an angiogenic activity comparable to that known to characterize antigenically stimulated lymphocytes.